[Idea/Question]Make My computer download something?

I had an idea for an app, and was wondering if it has ever been made. Im planning on getting a android phone in a few weeks, and im really really geeked about it. I download A TON of things via rapidshare, whether it movies, games, etc. An idea I had was an app that would somehow tell your computer to start downloading a link. I know that things like torrentdroid work this way, and something like this same technology, but with links light rapidshare, mediafire, or even just any download link. On top of that, if it could work with internet download managers/accelerators, thatd be cool to. Not necesarrily requesting this, just an idea for devs.